PIRO, the Pohang Institute for Intelligent Robotics located on the POSTECH campus, the first independent research institute for intelligent robotics in Korea, released information on PIRO-U3, a cleaning robot that functions underwater. Under supervision, the robot can be used in various places, such as industrial water tanks, reservoirs, riverbeds and also inshore area. It is noteworthy that PIRO-U3 was completed with domestic techniques only.Before PIRO-U3, sediments at the bottom of industrial water tanks were manually removed after draining all the water; the cleaning process of riverbeds o..